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Severe Thunderstorm Watch 158
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WW0158 Radar
Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
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   SEL8
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 158
   NWS STORM PREDICTION CENTER NORMAN OK
   835 PM CDT THU APR 3 2008
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          SOUTHERN OKLAHOMA
          NORTHERN TEXAS
   
   EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 835 PM
   UNTIL 400 AM CDT.
   
   HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES SOUTHWEST
   OF WICHITA FALLS TEXAS TO 40 MILES EAST NORTHEAST OF DURANT
   OKLAHOMA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).
   
   REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
   FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
   AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
   THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
   AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
   DO PRODUCE TORNADOES.
   
   OTHER WATCH INFORMATION...THIS SEVERE THUNDERSTORM WATCH REPLACES
   TORNADO WATCH NUMBER 153...TORNADO WATCH NUMBER 156. WATCH NUMBER
   153 156 WILL NOT BE IN EFFECT AFTER 835 PM CDT. CONTINUE...WW
   157...
   
   DISCUSSION...STRONG SURFACE COLD FRONT WILL CONTINUE TO FOCUS STRONG
   TO SEVERE THUNDERST0RM DEVELOPMENT AS IT PUSHES SWD ACROSS WW
   OVERNIGHT... GIVEN VERY STEEP MID LEVEL LAPSE RATES ATOP ABUNDANT
   LOW LEVEL MOISTURE.  DEEP LAYER SHEAR WILL REMAIN SUPPORTIVE OF
   SUPERCELLS AND SMALL LINEAR SEGMENTS...WITH PRIMARY SEVERE THREATS
   OF LARGE HAIL AND DAMAGING WINDS.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
   MOTION VECTOR 27035.
   
   
   ...EVANS
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